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为了有效控制充气薄膜结构模拟过程中的展开速度,本文首先从CV法(控制体积法)的基本理论入手,通过改变材料和结构的相关参数,对模型的设置进行了改进,以研究影响充气结构展开速度的因素;其次将两种不同充气速率对充气管展开速度影响的模拟结果与实验结果进行了对比,发现数值结果与实验结果趋势基本相同,从而验证了CV法的可行性;最后研究了材料参数、充气温度、排气面积等参数对充气管展开速度的影响。研究发现:充气速率越大,充气管的展开速度越大;材料的弹性模量影响较小;质量密度越大、温度越低、排气孔的面积越大,则充气管的展开速度越低。因此,从充气结构的材料本身和结构模型考虑,选用高密度材料、采用较低的充气温度、加大气囊的排气面积均能有效降低充气结构的展开速度,从而为充气结构的设计和应用提供参考。
In order to control the unfolding speed of inflatable thin film structure effectively, this paper starts with the basic theory of CV method (control volume method), and modifies the model by changing the parameters of material and structure to study the influence of inflatable structure Secondly, the simulation results of two different aeration rates on the inflation speed of the inflatable tube are compared with the experimental results. The numerical results are basically the same as the experimental results, which verifies the feasibility of the CV method. Finally, Material parameters, inflation temperature, exhaust area and other parameters of the inflation tube inflation speed. The results show that the larger the inflation rate is, the larger the inflation speed of the inflation tube is. The lower the elastic modulus of the material is, the higher the mass density is. The lower the temperature is, the larger the vent area is. . Therefore, considering the material itself and the structural model of the inflatable structure, the choice of high-density material, the use of a lower inflation temperature, and the increase of the airbag exhaust area can effectively reduce the deployment speed of the inflatable structure, thereby providing a design and application of the inflatable structure for reference.